A simple machine has only one of the following.
1. Lever
2. Wheel and axle
3. Pulley
4. Inclined Plane
5. Wedge
6. Screw
A yo-yo is an example of a wheel and axle. A compound machine uses more than one of the above.
A yo-yo is a pulley.
Yes
A ramp.
A regular pencil is considered an instrument, a mechanical pencil may be considered a simple machine , in that it has moving parts that rotate, and move up and down.
ferris wheel
a wheel and axil, as the yoyo will spin around because of the string and the axil located in the middle of the yoyo.
A yo-yo is a pulley.
A yo-yo
a plastic thing with string tied to it idiot ppl.
Yes
The lever is generally considered to be the first simple machine invented by humans.
A nail is a simple machine. :DDD i learned that in tech today.
A ramp.
A regular pencil is considered an instrument, a mechanical pencil may be considered a simple machine , in that it has moving parts that rotate, and move up and down.
Yes, it is a wedge, a simple machine.
ferris wheel
No, it is level to the ground, hence not an inclined plane. And mainly, it provides no mechanical advantage. To use Wikipedia's definition of a simple machine, a balance beam does not "chang[e] the direction or magnitude of a force" and is therefore not a simple machine.